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PECASUS for ICAOhttp://publi2-as.oma.be/record/4135
Andries, J.Sun, 10 Feb 2019 20:36:48 GMThttp://publi2-as.oma.be/record/41352018PECASUS, a European Space Weather Service Network for Aviation, ESWW15http://publi2-as.oma.be/record/4069
Kauristie, K.Thu, 31 Jan 2019 17:55:29 GMThttp://publi2-as.oma.be/record/40692018PECASUS: Space Weather instrumentation for a global space weather service to support civil aviationhttp://publi2-as.oma.be/record/4068
Laitinen, T.Thu, 31 Jan 2019 17:47:31 GMThttp://publi2-as.oma.be/record/40682018The ESA Virtual Space Weather Modelling Centre – Part 2http://publi2-as.oma.be/record/4055
Poedts, S.Thu, 31 Jan 2019 14:42:38 GMThttp://publi2-as.oma.be/record/40552018Provision of space weather bulletins in support to ESA missionshttp://publi2-as.oma.be/record/3464
The SSCC (SSA Space Weather Coordination Centre) is the focal point for user support of the ESA Space Situational Awareness (SSA) Program Space Weather Service Network (http://swe.ssa.esa.int/) and offers first line support to end-users. Its activities are gradually expanding as more products and tools are incorporated in the associated Network. Here we report on the tailoring of the network resources at the SSCC in order to produce space weather forecast notifications in support to selected ESA missions. With the help of forecasters from the Expert Service Centres (ECSs) for Solar Weather and for Space Radiation, the SSCC already has provided dedicated notifications for various missions including the launch window and the L2 insertion manoeuvre of the GAIA mission, for the last aerobraking campaign of Venus Express, during the trajectory around Comet 67P/Churyumov-Gerasimenko of the Rosetta mission and the landing of Philae lander, for the flight of the experimental IXV space plane, and for the launch LISA Pathfinder mission and during the operations phase at L1. Examples of space weather notification will be given. Those exercises are performed in a test and evaluation context helping to evaluate the network capabilities and to identify recommendations for improvement.Kruglanski, M.Mon, 29 Jan 2018 15:43:41 GMThttp://publi2-as.oma.be/record/34642017LYRA/EPT Perturbations Projecthttp://publi2-as.oma.be/record/3410
To better understand the radiation environment in low Earth orbit (LEO), the analysis of in-situ observations of a variety of particles, at different atmospheric heights, and in a wide range of energies, is needed. We present an analysis of energetic particles, indirectly detected by the Large Yield RAdiometer (LYRA) instrument on board ESA's Project for On-board Autonomy 2 (PROBA2) satellite as background signal. Combining Energetic Particle Telescope (EPT) observations with LYRA data for an overlapping period of time, we identified these particles as electrons with an energy range of 2 to 8 MeV. The observed events are strongly correlated to geo-magnetic activity and appear even during modest disturbances. They are also well confined geographically within the L=6 McIlwain zone, which makes it possible to identify their source. Although highly energetic particles are commonly disturbing data acquisition of space instruments, we show in this work that ultra-relativistic electrons with energies in the range of 2-8 MeV are detected only at high latitudes, while not present in the South Atlantic Anomaly region.Katsiyannis, AthanassiosMon, 15 Jan 2018 16:07:39 GMThttp://publi2-as.oma.be/record/34102017The detection of ultra-relativistic electrons in low Earth orbithttp://publi2-as.oma.be/record/3370
To better understand the radiation environment in low Earth orbit (LEO), the analysis of in-situ observations of a variety of particles, at different atmospheric heights, and in a wide range of energies, is needed. We present an analysis of energetic particles, indirectly detected by the Large Yield RAdiometer (LYRA) instrument on board ESA's Project for On-board Autonomy 2 (PROBA2) satellite as background signal. Combining Energetic Particle Telescope (EPT) observations with LYRA data for an overlapping period of time, we identified these particles as electrons with an energy range of 2 to 8 MeV. The observed events are strongly correlated to geo-magnetic activity and appear even during modest disturbances. They are also well confined geographically within the L=4-6 McIlwain zone, which makes it possible to identify their source. Although highly energetic particles are commonly perturbing data acquisition of space instruments, we show in this work that ultra-relativistic electrons with energies in the range of 2-8 MeV are detected only at high latitudes, while not present in the South Atlantic Anomaly region. Katsiyannis, AthanassiosFri, 12 Jan 2018 15:44:07 GMThttp://publi2-as.oma.be/record/33702017The detection of ultra-relativistic electrons in low Earth orbithttp://publi2-as.oma.be/record/3267
Katsiyannis, AthanassiosSun, 26 Nov 2017 16:04:14 GMThttp://publi2-as.oma.be/record/32672018Virtual Space Weather Modelling Centrehttp://publi2-as.oma.be/record/3167
Poedts, S.Fri, 07 Apr 2017 14:25:08 GMThttp://publi2-as.oma.be/record/31672016The ESA Virtual Space Weather Modelling Centre – Part 2http://publi2-as.oma.be/record/3166
Poedts, S.Fri, 07 Apr 2017 14:23:36 GMThttp://publi2-as.oma.be/record/31662016The discovery of an electron current at Earth's McIlwain L=6http://publi2-as.oma.be/record/3120
The Large Yield RAdiometer (LYRA) is an ultraviolet radiometer on-board ESA's PROBA2 micro-satellite. Since its 2009 launch it observes the Sun in four different passbands, chosen for their relevance to solar physics, aeronomy and space weather. Flying on an altitude of 725 km, LYRA proved to be an excellent flare monitor and is involved in the analysis of the atmospheric composition of the Earth. One of the most peculiar and intriguing results of LYRA is the detection of short, strong, bursts that do not directly correlate with solar coronal events, neither with the pointing of the instrument to Earth's upper atmosphere, but correlate well with high Ap index on Earth's surface. The location of the PROBA2 spacecraft during those detections also correlates well with the Earth's magnetic field lines with a Mcilwain L-value of 5.8$\pm$0.8, providing an independent confirmation of the magnetic origin of these detections. Most intriguingly the $L=6$ Mcilwain surface extends to an area well inside the outer Van Allen belt. The same events are also observed by the Energetic Particle Telescope (EPT), an energetic particle detection instrument, on board ESA's PROBA-V mission. Similar detections made by the 2.4-8 $MeV$ electrons channel, providing us with the identification of the cause of the detections.Katsiyannis, TTue, 17 Jan 2017 15:44:17 GMThttp://publi2-as.oma.be/record/31202016The discovery of an electron current at Earth's McIlwain L=6http://publi2-as.oma.be/record/3119
The Large Yield RAdiometer (LYRA) is an ultraviolet solar radiometer on-board ESA's PROBA2 micro-satellite. Since its launch in 2009 to an altitude of 735km, one of the most peculiar and intriguing results of LYRA is the detection of short, strong, bursts that do not directly correlate with solar coronal events, nor with pointing of the instrument to Earth's upper atmosphere, but correlate well with high a$_{p}$ index on Earth's surface and the crossing by the satellite of the L=6 shell. Very similar detections were more recently made by the Energetic Particles Telescope (EPT) on board the PROBA-V micro-satellite, establishing the identification of the detections as relativistic electrons of the 2.4-8 MeV energy range. Several attributes of those detections, including their dependency to various space weather indexes (ap, $D_st$, etc), their geographical distribution, a dawn/dusk asymmetry and others will be presented. Open questions related to the discovery of this phenomenon will also be discussed.Katsiyannis, ThanassisTue, 17 Jan 2017 15:27:08 GMThttp://publi2-as.oma.be/record/31192016Services for GNSS users within the ESA Space Situational Awareness Space Weather Service Networkhttp://publi2-as.oma.be/record/1468
Kruglanski, M.Mon, 22 Feb 2016 13:17:28 GMThttp://publi2-as.oma.be/record/14682015Detection of EUV/Soft X-ray bremsstrahlung emission at terrestrial altitudes above 750 kmhttp://publi2-as.oma.be/record/1314
Katsiyannis, A.C.Mon, 22 Feb 2016 13:17:26 GMThttp://publi2-as.oma.be/record/13142015LYRA detections of Aurora eventshttp://publi2-as.oma.be/record/1310
Katsiyannis, A.C.Mon, 22 Feb 2016 13:17:26 GMThttp://publi2-as.oma.be/record/13102015Impact of the Particle Environment on SWAP and LYRA Datahttp://publi2-as.oma.be/record/1063
Dominique, M.Mon, 22 Feb 2016 13:17:23 GMThttp://publi2-as.oma.be/record/10632010Impact of the near-Earth environment on PROBA2-LYRAhttp://publi2-as.oma.be/record/757
Dominique, M.Mon, 22 Feb 2016 13:17:20 GMThttp://publi2-as.oma.be/record/7572013Roadmaps for Future Operational Space Weather Serviceshttp://publi2-as.oma.be/record/593
Valdes, S.Mon, 22 Feb 2016 13:17:19 GMThttp://publi2-as.oma.be/record/5932012In situ detections of Space Weather by the LYRA radiometer on-board the PROBA satellitehttp://publi2-as.oma.be/record/591
Katsiyannis, A.C.Mon, 22 Feb 2016 13:17:19 GMThttp://publi2-as.oma.be/record/5912014In situ detections of Space Weather by the LYRA radiometer on-board the PROBA2 satellitehttp://publi2-as.oma.be/record/590
Katsiyannis, A.C.Mon, 22 Feb 2016 13:17:19 GMThttp://publi2-as.oma.be/record/5902014